Electrical gremlins...

[Steve93mustanglx]

Hey folks, having a number of electrical issues with the 'Burb. I have a heater blower motor that will not work using the switches on the console. Took it out today, wired direct to batt, works fine. I reinstalled, ran ground wire to chassis and it works that way, too. OK, so I have a ground problem. Makes sense, I just replaced a fuel tank sending unit that still does not read correctly.

I cleaned the ground for the sending unit (no improvement), cleaned the PITA ground under the downpipe which has 2 ground straps to a common bolt (no improvement) and re-cleaned the batt terminals and various other under hood grounds.

What am I missing?

 

[ak diesel driver]

Have you checked the resistor? Normally when it fails you still have high speed though.

 

[just a number]

just do a search on "cleaning grounds" in the 6.5 section and you'll find out where they are and what to look for. don't worry, your not alone.

 

[corolla]

For the blower on high and the fuel gauge check the ground on the engine, right rear head.
Heater / AC control ground is by the behind left side of I/P (Instrument Panel).
There is a relay behind the glove box next to the PCM that is used for blower high as mentioned above, there was an excellent thread on it, but I can't find it.

Try the one on DP:http://www.dieselplace.com/forum/showthread.php?t=187331&highlight=heater

 

[Steve93mustanglx]

Thanks for the info. I will definitely look at it tomorrow. The problem keeps getting worse- fuel gauge, then aux light near hitch, then heater blower motor. It's getting OLD!